Cheap flights from St. Louis to Canada from C$ 157

In general, June is the cheapest month to fly from St. Louis to Canada. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 465. If you’re not able to fly to Canada in June, then March is your next best option. Flight prices from St. Louis to Canada during March average around C$ 594.

Our data shows that Sunday is the least expensive day to fly to Canada. Tickets to fly out on this day can be as low as C$ 472. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 648. These prices are subject to change though, so be sure to set up a Price Alert for flights to Canada.

According to our data, the cheapest time of day to fly to Canada is in the morning. momondo users have found flights departing from St. Louis to Canada in the morning for as low as C$ 584. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Canada, so prices are often more expensive at around C$ 648 per ticket.

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Canada flight prices

There is only 1 cabin class available to choose from on Lambert-St Louis to Canada flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 56% on your flight if you consider stops on a St. Louis to Canada flight.

As of March 2026, 3 flights take off from St. Louis and land in Canada each day. The most common flight departure time for this route is 4:00p.m., with 100% of daily flights taking off in the afternoon.

The number of flights available between St. Louis and Canada is 21 per week as of March 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.